When
Henk Chin A Sen became Prime Minister after the 1980
Sergeants' Coup, he chose Neijhorst as his Finance Minister. Neijhorst at the time had been serving as the economic director of the National Development Bank. After the serving Minister of Economic Planning was dismissed in June, Neijhorst took over that position as well. However, when
President Ferrier was forced by the military to resign in August, Neijhorst voluntarily resigned from the Cabinet soon after. After his resignation, Neijhorst became a member of the Committee for Netherlands-Suriname Cooperation. He also joined the
Surinaams Postspaarbank (Surinamese Postal Savings Bank) as a director. He was part of the four-member Policy Centre, a governing body whose other members were Foreign Minister
Harvey Naarendorp,
Military Council Chairman
Desi Bouterse, and Military Council Vice-Chairman
Roy Horb. In theory, the Policy Centre would provide a buffer between the National Military Council and the civilian Cabinet of Ministers. However, Neijhorst and the rest of the Cabinet chose to resign after the National Military Council unilaterally
decided to eliminate opposition leaders. In 1991, Neijhorst became an economic advisor to the
Venetiaan government. ==Later career==